Stanley 30 oz/.88 L The IceFlow Flip Straw Tumbler - Individual Pieces Cookware : Aloe : Stanley Accessories IceFlow Flip Straw Tumbler has a built-in flip straw for easy and effortless sipping. Snap it shut and the double-wall vacuum insulation will keep your drink fully leakproof and extra cold for hours. Designed to fit securely in cupholders and has a folding handle for easy portability. Double-wall vacuum insulation for up to 2 days of cold. Leakproof flip straw. Easy-to-carry handle. BPA-free and dishwasher safe. Stainless steel. Imported.